| SUN Qun,SONG Jinbao,GUAN Changlong. 2005. Simulation of the ocean surface mixed layer under the wave breaking. Acta Oceanologica Sinica, (3):9－15 |
| Simulation of the ocean surface mixed layer under the wave breaking |
| Simulation of the ocean surface mixed layer under the wave breaking |
| Received:October 08, 2004 Revised:February 03, 2005 |
| DOI： |
| Key words:breaking waves mixed layer turbulent kinetic energy thermocline |
| 中文关键词: breaking waves mixed layer turbulent kinetic energy thermocline |
| 基金项目: |
| Author Name | Affiliation | E-mail | | SUN Qun | Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
Laboratory of Physical Oceanography, Ocean University of China, Qingdao 266003, China | sunqun@ms.qdio.ac.cn | | SONG Jinbao | Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China | | | GUAN Changlong | Laboratory of Physical Oceanography, Ocean University of China, Qingdao 266003, China | |
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| Abstract: |
| A one-dimensional mixed-layer model, including a Mellor-Yamada level 2.5 turbulence closure scheme, was implemented to investigate the dynamical and thermal structures of the ocean surface mixed layer in the northern South China Sea. The turbulent kinetic energy released through wave breaking was incorporated into the model as a source of energy at the ocean surface, and the influence of the breaking waves on the mixed layer was studied. The numerical simulations show that the simulated SST is overestimated in summer without the breaking waves. However, the cooler SST is simulated when the effect of the breaking waves is considered, the corresponding discrepancy with the observed data decreases up to 20% and the MLD calculated averagely deepens 3.8 m. Owing to the wave-enhanced turbulence mixing in the summertime, the stratification at the bottom of the mixed layer was modified and the temperature gradient spread throughout the whole thermocline compared with the concentrated distribution without wave breaking. |
| 中文摘要: |
| A one-dimensional mixed-layer model, including a Mellor-Yamada level 2.5 turbulence closure scheme, was implemented to investigate the dynamical and thermal structures of the ocean surface mixed layer in the northern South China Sea. The turbulent kinetic energy released through wave breaking was incorporated into the model as a source of energy at the ocean surface, and the influence of the breaking waves on the mixed layer was studied. The numerical simulations show that the simulated SST is overestimated in summer without the breaking waves. However, the cooler SST is simulated when the effect of the breaking waves is considered, the corresponding discrepancy with the observed data decreases up to 20% and the MLD calculated averagely deepens 3.8 m. Owing to the wave-enhanced turbulence mixing in the summertime, the stratification at the bottom of the mixed layer was modified and the temperature gradient spread throughout the whole thermocline compared with the concentrated distribution without wave breaking. |
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